If the equation 12x^(2)+7xy-py^(2)-18x+q...

If the equation `12x^(2)+7xy-py^(2)-18x+qy+6=0` represents a pair of
perpendicular straight lines, then the value of `q` is

A

(a) `-1,2`

B

(b) `1,-2`

C

(c) `1,(-23)/2`

D

(d) `-1,23/2`

Verified by Experts

The correct Answer is:

C

NA

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